.back_head{
	width:90%;
	height:100%;
	margin-left:7%;
}

.back_header_left{
	float:left;
	height:30px;
	width:40%;
}

.back_header_left p{
	height:100%;
	line-height:100%;
	font-family:cursive;
	font-size:35px;
}

.back_header_right{
	float:right;
	width:40%; 
	line-height:20px;
	text-align:right;
}

.back_current_user{
	text-decoration:underline;
}

.back_exit{
	color:red;
	cursor:pointer;
	text-decoration:none;
}